16660316640 has 96 divisors (see below), whose sum is σ = 57250924416. Its totient is φ = 4038863360.

The previous prime is 16660316539. The next prime is 16660316663. The reversal of 16660316640 is 4661306661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1572402 + ... + 1582961.

It is an arithmetic number, because the mean of its divisors is an integer number (596363796).

Almost surely, 2^16660316640 is an apocalyptic number.

16660316640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16660316640 is an abundant number, since it is smaller than the sum of its proper divisors (40590607776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16660316640 is a wasteful number, since it uses less digits than its factorization.

16660316640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155392 (or 3155384 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The spelling of 16660316640 in words is "sixteen billion, six hundred sixty million, three hundred sixteen thousand, six hundred forty".